The workspaces icons at the bottom twinkle when i resize

[Lordlorio]

Captchas

• [x] I have read the instructions.
• [x] I have searched existing issues and avoided creating duplicates.
• [x] I am not filing an enhancement request.
• [ ] I have checked that this issue cannot be reproduced on Mozilla Firefox.
• [x] I have checked that this issue can be reproduced once I removed all my Mods and Custom CSS.

What happened?

https://github.com/user-attachments/assets/2b6b3840-ebfd-4a17-b604-7ca34292399d

And sometimes the workspace icon stays like this.

Version

1.13t (Firefox 138.0.4) (2025-05-19) (64-bit)

What platform are you seeing the problem on?

Windows - x64

What component is this issue related to?

Customizable UI / Toolbars

Relevant log output if applicable